Drew has 4 pieces of rope 1 meter ong each. He cuts each rope into fifths. How many fifths will he have after cutting all the ropes

For this question it would make more sense to understand it if you keep each 1 m long piece of rope separate. For every one hole, you would be able to get five groups of 1/5 from it. If there are four of these, you would have four groups of five 1/5. This would be 20 total pieces. Mathematically, you are taking 4 and breaking it into equal groups (division) of 1/5. This will become 4 x 5/1=20.